

    \filetitle{xasymptote}{Set or get asymptotic assumptions for exogenous inputs}{VAR/xasymptote}

	\paragraph{Syntax}

\begin{verbatim}
V = xasymptote(V,X0)
X = xasymptote(V)
\end{verbatim}

\paragraph{Input arguments}

\begin{itemize}
\item
  \texttt{V} {[} VAR {]} - VAR object.
\item
  \texttt{X0} {[} numeric {]} - A Nx-NGrp-by-NAlt vector or matrix of
  asymptotic assumptions for exogenous inputs, where Nx is the number of
  exogenous variables, NGrp is the number of groups in panel VARs, and
  NAlt is the number of alternative parameterizations.
\end{itemize}

\paragraph{Output arguments}

\begin{itemize}
\tightlist
\item
  \texttt{V} {[} VAR {]} - VAR object.
\end{itemize}

\paragraph{Description}

The asymptotic assumptions for exogenous inputs are used in the
following contexts:

\begin{itemize}
\item
  to compute the asymptotic mean of the VAR process,
  \href{VAR/mean}{\texttt{mean}};
\item
  to set up initical conditions for resampling,
  \href{VAR/resample}{\texttt{resample}}, when they are not supplied in
  the input database.
\end{itemize}

If any of the three dimensions of the vector/matrix \texttt{X0} is size
1, it will be automatically expanded to its appropriate size.

The asymptotic assumptions are reset to \texttt{NaN} each time the VAR
object is estimated using the function
\href{VAR/estimate}{\texttt{estimate}}.

\paragraph{Example}


